/* Base Styles - Ultra Minimalist */
:root {
    --text-color: #000000;
    --light-text: #666666;
    --background-color: #ffffff;
    --border-color: #e5e5e5;
    --hover-bg: #f5f5f5;
}

* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

body {
    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, 'Helvetica Neue', Arial, sans-serif;
    color: var(--text-color);
    background-color: var(--background-color);
    line-height: 1.7;
    font-size: 16px;
    -webkit-font-smoothing: antialiased;
    padding: 0 1.5rem;
}

h1, h2, h3 {
    font-weight: 400;
    line-height: 1.5;
    color: var(--text-color);
}

h1 {
    font-size: 1.5rem;
}

h2 {
    font-size: 1.25rem;
}

h3 {
    font-size: 1rem;
}

a {
    text-decoration: none;
    color: inherit;
}

ul {
    list-style: none;
}

img {
    max-width: 100%;
    height: auto;
}

/* Header Styles */
header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 1.5rem 0;
    max-width: 672px;
    margin: 0 auto;
    border-bottom: 1px solid var(--border-color);
}

.logo {
    font-size: 1rem;
    font-weight: 400;
    color: var(--text-color);
    cursor: pointer;
}

.logo-link {
    text-decoration: none;
    color: inherit;
}

nav ul {
    display: flex;
    gap: 1.5rem;
}

nav ul li a {
    font-weight: 400;
    color: var(--text-color);
    text-decoration: underline;
    text-decoration-color: var(--border-color);
    text-underline-offset: 4px;
}

nav ul li a:hover,
nav ul li a.active {
    text-decoration-color: var(--text-color);
}

/* Landing Page Styles */
.landing {
    min-height: calc(100vh - 80px);
    display: flex;
    align-items: flex-start;
    justify-content: center;
    padding: 3rem 0;
}

.hero {
    max-width: 672px;
    width: 100%;
    padding: 0;
}

.hero p {
    color: var(--text-color);
    margin-bottom: 1.5rem;
    line-height: 1.7;
    font-size: 1rem;
}

.social-links {
    display: flex;
    gap: 1.5rem;
    margin: 2rem 0 0 0;
}

.social-links a {
    color: var(--text-color);
    font-size: 1rem;
    text-decoration: underline;
    text-decoration-color: var(--border-color);
    text-underline-offset: 4px;
}

.social-links a:hover {
    text-decoration-color: var(--text-color);
}


/* Projects Page Styles */
.projects-page {
    padding: 3rem 0;
    max-width: 672px;
    margin: 0 auto;
}

.projects-page h1 {
    font-size: 1.5rem;
    margin-bottom: 3rem;
    font-weight: 400;
}

.filter-tabs {
    display: flex;
    gap: 1.5rem;
    margin-bottom: 3rem;
    flex-wrap: wrap;
}

.filter-btn {
    padding: 0;
    border: none;
    background: none;
    cursor: pointer;
    font-family: inherit;
    font-weight: 400;
    font-size: 1rem;
    color: var(--text-color);
    text-decoration: underline;
    text-decoration-color: transparent;
    text-underline-offset: 4px;
}

.filter-btn:hover, .filter-btn.active {
    text-decoration-color: var(--text-color);
}

.projects-grid {
    display: flex;
    flex-direction: column;
    gap: 3rem;
}

.project-card {
    border-bottom: 1px solid var(--border-color);
    padding-bottom: 3rem;
}

.project-card:last-child {
    border-bottom: none;
}

.project-image {
    display: none;
}

.project-info {
    padding: 0;
}

.project-info h3 {
    font-size: 1rem;
    margin-bottom: 0.5rem;
    font-weight: 500;
}

.project-info p {
    color: var(--text-color);
    margin-bottom: 1rem;
    line-height: 1.7;
}

.project-tags {
    display: flex;
    flex-wrap: wrap;
    gap: 0.75rem;
    margin-bottom: 1rem;
}

.project-tags span {
    color: var(--text-color);
    font-size: 0.875rem;
}

/* About Page Styles */
.about-page {
    padding: 3rem 0;
    max-width: 672px;
    margin: 0 auto;
}

.about-container {
    display: flex;
    flex-direction: column;
    gap: 3rem;
}

.about-image {
    display: none;
}

.about-content h1 {
    font-size: 1.5rem;
    margin-bottom: 2rem;
    font-weight: 400;
}

.about-content p {
    margin-bottom: 1.5rem;
    color: var(--text-color);
    line-height: 1.7;
}

.about-content h2 {
    font-size: 1.25rem;
    margin: 3rem 0 1.5rem;
    font-weight: 400;
}

.skills-container {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(150px, 1fr));
    gap: 2rem;
}

.skill-category h3 {
    font-size: 1rem;
    margin-bottom: 0.75rem;
    font-weight: 500;
}

.skill-category ul li {
    margin-bottom: 0.5rem;
    color: var(--text-color);
    font-size: 1rem;
    line-height: 1.7;
}

.experience-item, .education-item {
    margin-bottom: 2rem;
}

.experience-item h3, .education-item h3 {
    font-size: 1rem;
    margin-bottom: 0.5rem;
    font-weight: 500;
}

.company, .institution {
    font-weight: 400;
    margin-bottom: 0.25rem;
}

.period {
    color: var(--text-color);
    font-size: 0.875rem;
    margin-bottom: 0.5rem;
}

.contact-section {
    margin-top: 3rem;
}

.contact-section .social-links {
    justify-content: flex-start;
}

/* Responsive Styles */
@media (max-width: 768px) {
    .skills-container {
        grid-template-columns: 1fr;
    }
}

@media (max-width: 576px) {
    body {
        padding: 0 1rem;
    }

    nav ul {
        gap: 1rem;
    }
}